Hot Plasticity of 610L Continuous Cast Slab for Automobile Beam

The high-temperature thermoplasticity experiment of 610L continuous cast slab for automobile beam is performed at Gleeble-3500 thermal simulator.The fracture appearance and microstructure is examined with SEM.Results indicate that there are two brittle zones at temperature range of 1 300~600℃ in which brittle zone Ⅲ is at about 910~705℃.The main causes for the low ductility in brittle zone Ⅲ are studied.The experiment provides a basis for the development of continuous casting and hot rolling process system of that steel type.